The weekly gatherings of knitters at Needle & Skein, a yarn store in Minneapolis, are typically filled with giggles and storytelling. But, earlier this month, a heaviness hung in the air. "It was just collective exhaustion," said Paul Neary, a shop employee. "Minnesotans — we're not going to say the big thing, but we often know what the big thing is just by looking at each other." The "big thing" for the group of knitters was the widespread presence of federal immigration officials to their city and the death of U.S. citizen Renee Good by an immigration agent. (Ten days...